var arrowimages={down:['downarrowclass', 'img/down.gif', 20], right:['rightarrowclass', 'img/right.gif']}

var jqueryslidemenu={

animateduration: {over: 100, out: 100}, 

buildmenu:function(menuid, arrowsvar){

	jQuery(document).ready(function($){

		var $mainmenu=$("#"+menuid+">ul")

		var $headers=$mainmenu.find("ul").parent()

		$headers.each(function(i){

			var $curobj=$(this)

			var $subul=$(this).find('ul:eq(0)')

			this._dimensions={w:this.offsetWidth, h:this.offsetHeight, subulw:$subul.outerWidth(), subulh:$subul.outerHeight()}

			this.istopheader=$curobj.parents("ul").length==1? true : false

			$subul.css({top:this.istopheader? this._dimensions.h+"px" : 0})

			$curobj.children("a:eq(0)").css(this.istopheader? {paddingRight: arrowsvar.down[2]} : {}).append(

			''

			)

			$curobj.hover(

				function(e){

					var $targetul=$(this).children("ul:eq(0)")

					this._offsets={left:$(this).offset().left, top:$(this).offset().top}

					var menuleft=this.istopheader? 0 : this._dimensions.w

					menuleft=(this._offsets.left+menuleft+this._dimensions.subulw>$(window).width())? (this.istopheader? -this._dimensions.subulw+this._dimensions.w : -this._dimensions.w) : menuleft

					if ($targetul.queue().length<=1)

					$targetul.css({left:menuleft+"px", width:this._dimensions.subulw+'px'}).slideDown(jqueryslidemenu.animateduration.over)

				},

				function(e){

					var $targetul=$(this).children("ul:eq(0)")

					$targetul.slideUp(jqueryslidemenu.animateduration.out)

				}

			) 

		}) 

		$mainmenu.find("ul").css({display:'none', visibility:'visible'})

	}) 

}

}

jqueryslidemenu.buildmenu("menu", arrowimages);
